4 * - TCP connection management
5 * - user-visible check/wait and event-loop-related functions
9 * Copyright (C) 1997-2000 Ian Jackson <ian@davenant.greenend.org.uk>
11 * It is part of adns, which is
12 * Copyright (C) 1997-2000 Ian Jackson <ian@davenant.greenend.org.uk>
13 * Copyright (C) 1999 Tony Finch <dot@dotat.at>
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2, or (at your option)
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software Foundation,
27 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
34 #include <sys/types.h>
37 #include <sys/socket.h>
38 #include <netinet/in.h>
39 #include <arpa/inet.h>
44 /* TCP connection management. */
46 static void tcp_close(adns_state ads
) {
50 close(ads
->tcpsocket
);
52 ads
->tcprecv
.used
= ads
->tcprecv_skip
= ads
->tcpsend
.used
= 0;
55 void adns__tcp_broken(adns_state ads
, const char *what
, const char *why
) {
59 assert(ads
->tcpstate
== server_connecting
|| ads
->tcpstate
== server_ok
);
61 if (what
) adns__warn(ads
,serv
,0,"TCP connection failed: %s: %s",what
,why
);
63 if (ads
->tcpstate
== server_connecting
) {
64 /* Counts as a retry for all the queries waiting for TCP. */
65 for (qu
= ads
->tcpw
.head
; qu
; qu
= qu
->next
)
70 ads
->tcpstate
= server_broken
;
71 ads
->tcpserver
= (serv
+1)%ads
->nservers
;
74 static void tcp_connected(adns_state ads
, struct timeval now
) {
77 adns__debug(ads
,ads
->tcpserver
,0,"TCP connected");
78 ads
->tcpstate
= server_ok
;
79 for (qu
= ads
->tcpw
.head
; qu
&& ads
->tcpstate
== server_ok
; qu
= nqu
) {
81 assert(qu
->state
== query_tcpw
);
82 adns__querysend_tcp(qu
,now
);
86 void adns__tcp_tryconnect(adns_state ads
, struct timeval now
) {
88 struct sockaddr_in addr
;
89 struct protoent
*proto
;
91 for (tries
=0; tries
<ads
->nservers
; tries
++) {
92 switch (ads
->tcpstate
) {
93 case server_connecting
:
97 case server_disconnected
:
103 assert(!ads
->tcpsend
.used
);
104 assert(!ads
->tcprecv
.used
);
105 assert(!ads
->tcprecv_skip
);
107 proto
= getprotobyname("tcp");
108 if (!proto
) { adns__diag(ads
,-1,0,"unable to find protocol no. for TCP !"); return; }
109 fd
= socket(AF_INET
,SOCK_STREAM
,proto
->p_proto
);
111 adns__diag(ads
,-1,0,"cannot create TCP socket: %s",strerror(errno
));
114 r
= adns__setnonblock(ads
,fd
);
116 adns__diag(ads
,-1,0,"cannot make TCP socket nonblocking: %s",strerror(r
));
120 memset(&addr
,0,sizeof(addr
));
121 addr
.sin_family
= AF_INET
;
122 addr
.sin_port
= htons(DNS_PORT
);
123 addr
.sin_addr
= ads
->servers
[ads
->tcpserver
].addr
;
124 r
= connect(fd
,(const struct sockaddr
*)&addr
,sizeof(addr
));
126 ads
->tcpstate
= server_connecting
;
127 if (r
==0) { tcp_connected(ads
,now
); return; }
128 if (errno
== EWOULDBLOCK
|| errno
== EINPROGRESS
) {
129 ads
->tcptimeout
= now
;
130 timevaladd(&ads
->tcptimeout
,TCPCONNMS
);
133 adns__tcp_broken(ads
,"connect",strerror(errno
));
134 ads
->tcpstate
= server_disconnected
;
138 /* Timeout handling functions. */
140 void adns__must_gettimeofday(adns_state ads
, const struct timeval
**now_io
,
141 struct timeval
*tv_buf
) {
142 const struct timeval
*now
;
147 r
= gettimeofday(tv_buf
,0); if (!r
) { *now_io
= tv_buf
; return; }
148 adns__diag(ads
,-1,0,"gettimeofday failed: %s",strerror(errno
));
149 adns_globalsystemfailure(ads
);
153 static void inter_immed(struct timeval
**tv_io
, struct timeval
*tvbuf
) {
154 struct timeval
*rbuf
;
159 if (!rbuf
) { *tv_io
= rbuf
= tvbuf
; }
164 static void inter_maxto(struct timeval
**tv_io
, struct timeval
*tvbuf
,
165 struct timeval maxto
) {
166 struct timeval
*rbuf
;
171 *tvbuf
= maxto
; *tv_io
= tvbuf
;
173 if (timercmp(rbuf
,&maxto
,>)) *rbuf
= maxto
;
175 /*fprintf(stderr,"inter_maxto maxto=%ld.%06ld result=%ld.%06ld\n",
176 maxto.tv_sec,maxto.tv_usec,(**tv_io).tv_sec,(**tv_io).tv_usec);*/
179 static void inter_maxtoabs(struct timeval
**tv_io
, struct timeval
*tvbuf
,
180 struct timeval now
, struct timeval maxtime
) {
184 /*fprintf(stderr,"inter_maxtoabs now=%ld.%06ld maxtime=%ld.%06ld\n",
185 now.tv_sec,now.tv_usec,maxtime.tv_sec,maxtime.tv_usec);*/
187 maxtime
.tv_sec
-= (now
.tv_sec
+2);
188 maxtime
.tv_usec
-= (now
.tv_usec
-2000000);
189 dr
= ldiv(maxtime
.tv_usec
,1000000);
190 maxtime
.tv_sec
+= dr
.quot
;
191 maxtime
.tv_usec
-= dr
.quot
*1000000;
192 if (maxtime
.tv_sec
<0) timerclear(&maxtime
);
193 inter_maxto(tv_io
,tvbuf
,maxtime
);
196 static void timeouts_queue(adns_state ads
, int act
,
197 struct timeval
**tv_io
, struct timeval
*tvbuf
,
198 struct timeval now
, struct query_queue
*queue
) {
201 for (qu
= queue
->head
; qu
; qu
= nqu
) {
203 if (!timercmp(&now
,&qu
->timeout
,>)) {
204 inter_maxtoabs(tv_io
,tvbuf
,now
,qu
->timeout
);
206 if (!act
) { inter_immed(tv_io
,tvbuf
); return; }
207 LIST_UNLINK(*queue
,qu
);
208 if (qu
->state
!= query_tosend
) {
209 adns__query_fail(qu
,adns_s_timeout
);
211 adns__query_send(qu
,now
);
218 static void tcp_events(adns_state ads
, int act
,
219 struct timeval
**tv_io
, struct timeval
*tvbuf
,
220 struct timeval now
) {
224 switch (ads
->tcpstate
) {
226 if (!act
) { inter_immed(tv_io
,tvbuf
); return; }
227 for (qu
= ads
->tcpw
.head
; qu
; qu
= nqu
) {
229 assert(qu
->state
== query_tcpw
);
230 if (qu
->retries
> ads
->nservers
) {
231 LIST_UNLINK(ads
->tcpw
,qu
);
232 adns__query_fail(qu
,adns_s_allservfail
);
235 ads
->tcpstate
= server_disconnected
;
236 case server_disconnected
: /* fall through */
237 if (!ads
->tcpw
.head
) return;
238 if (!act
) { inter_immed(tv_io
,tvbuf
); return; }
239 adns__tcp_tryconnect(ads
,now
);
242 if (ads
->tcpw
.head
) return;
243 if (!ads
->tcptimeout
.tv_sec
) {
244 assert(!ads
->tcptimeout
.tv_usec
);
245 ads
->tcptimeout
= now
;
246 timevaladd(&ads
->tcptimeout
,TCPIDLEMS
);
248 case server_connecting
: /* fall through */
249 if (!act
|| !timercmp(&now
,&ads
->tcptimeout
,>)) {
250 inter_maxtoabs(tv_io
,tvbuf
,now
,ads
->tcptimeout
);
253 /* TCP timeout has happened */
254 switch (ads
->tcpstate
) {
255 case server_connecting
: /* failed to connect */
256 adns__tcp_broken(ads
,"unable to make connection","timed out");
258 case server_ok
: /* idle timeout */
260 ads
->tcpstate
= server_disconnected
;
274 void adns__timeouts(adns_state ads
, int act
,
275 struct timeval
**tv_io
, struct timeval
*tvbuf
,
276 struct timeval now
) {
277 timeouts_queue(ads
,act
,tv_io
,tvbuf
,now
, &ads
->udpw
);
278 timeouts_queue(ads
,act
,tv_io
,tvbuf
,now
, &ads
->tcpw
);
279 tcp_events(ads
,act
,tv_io
,tvbuf
,now
);
282 void adns_firsttimeout(adns_state ads
,
283 struct timeval
**tv_io
, struct timeval
*tvbuf
,
284 struct timeval now
) {
285 adns__consistency(ads
,0,cc_entex
);
286 adns__timeouts(ads
, 0, tv_io
,tvbuf
, now
);
287 adns__consistency(ads
,0,cc_entex
);
290 void adns_processtimeouts(adns_state ads
, const struct timeval
*now
) {
291 struct timeval tv_buf
;
293 adns__consistency(ads
,0,cc_entex
);
294 adns__must_gettimeofday(ads
,&now
,&tv_buf
);
295 if (now
) adns__timeouts(ads
, 1, 0,0, *now
);
296 adns__consistency(ads
,0,cc_entex
);
299 /* fd handling functions. These are the top-level of the real work of
300 * reception and often transmission.
303 int adns__pollfds(adns_state ads
, struct pollfd pollfds_buf
[MAX_POLLFDS
]) {
304 /* Returns the number of entries filled in. Always zeroes revents. */
306 assert(MAX_POLLFDS
==2);
308 pollfds_buf
[0].fd
= ads
->udpsocket
;
309 pollfds_buf
[0].events
= POLLIN
;
310 pollfds_buf
[0].revents
= 0;
312 switch (ads
->tcpstate
) {
313 case server_disconnected
:
316 case server_connecting
:
317 pollfds_buf
[1].events
= POLLOUT
;
320 pollfds_buf
[1].events
= ads
->tcpsend
.used ? POLLIN
|POLLOUT
|POLLPRI
: POLLIN
|POLLPRI
;
325 pollfds_buf
[1].fd
= ads
->tcpsocket
;
329 int adns_processreadable(adns_state ads
, int fd
, const struct timeval
*now
) {
330 int want
, dgramlen
, r
, udpaddrlen
, serv
, old_skip
;
331 byte udpbuf
[DNS_MAXUDP
];
332 struct sockaddr_in udpaddr
;
334 adns__consistency(ads
,0,cc_entex
);
336 switch (ads
->tcpstate
) {
337 case server_disconnected
:
339 case server_connecting
:
342 if (fd
!= ads
->tcpsocket
) break;
343 assert(!ads
->tcprecv_skip
);
345 if (ads
->tcprecv
.used
>= ads
->tcprecv_skip
+2) {
346 dgramlen
= ((ads
->tcprecv
.buf
[ads
->tcprecv_skip
]<<8) |
347 ads
->tcprecv
.buf
[ads
->tcprecv_skip
+1]);
348 if (ads
->tcprecv
.used
>= ads
->tcprecv_skip
+2+dgramlen
) {
349 old_skip
= ads
->tcprecv_skip
;
350 ads
->tcprecv_skip
+= 2+dgramlen
;
351 adns__procdgram(ads
, ads
->tcprecv
.buf
+old_skip
+2,
352 dgramlen
, ads
->tcpserver
, 1,*now
);
360 ads
->tcprecv
.used
-= ads
->tcprecv_skip
;
361 memmove(ads
->tcprecv
.buf
,ads
->tcprecv
.buf
+ads
->tcprecv_skip
,ads
->tcprecv
.used
);
362 ads
->tcprecv_skip
= 0;
363 if (!adns__vbuf_ensure(&ads
->tcprecv
,want
)) { r
= ENOMEM
; goto xit
; }
364 assert(ads
->tcprecv
.used
<= ads
->tcprecv
.avail
);
365 if (ads
->tcprecv
.used
== ads
->tcprecv
.avail
) continue;
366 r
= read(ads
->tcpsocket
,
367 ads
->tcprecv
.buf
+ads
->tcprecv
.used
,
368 ads
->tcprecv
.avail
-ads
->tcprecv
.used
);
370 ads
->tcprecv
.used
+= r
;
373 if (errno
==EAGAIN
|| errno
==EWOULDBLOCK
) { r
= 0; goto xit
; }
374 if (errno
==EINTR
) continue;
375 if (errno_resources(errno
)) { r
= errno
; goto xit
; }
377 adns__tcp_broken(ads
,"read",r?
strerror(errno
):"closed");
379 } while (ads
->tcpstate
== server_ok
);
384 if (fd
== ads
->udpsocket
) {
386 udpaddrlen
= sizeof(udpaddr
);
387 r
= recvfrom(ads
->udpsocket
,udpbuf
,sizeof(udpbuf
),0,
388 (struct sockaddr
*)&udpaddr
,&udpaddrlen
);
390 if (errno
== EAGAIN
|| errno
== EWOULDBLOCK
) { r
= 0; goto xit
; }
391 if (errno
== EINTR
) continue;
392 if (errno_resources(errno
)) { r
= errno
; goto xit
; }
393 adns__warn(ads
,-1,0,"datagram receive error: %s",strerror(errno
));
396 if (udpaddrlen
!= sizeof(udpaddr
)) {
397 adns__diag(ads
,-1,0,"datagram received with wrong address length %d"
398 " (expected %d)", udpaddrlen
,sizeof(udpaddr
));
401 if (udpaddr
.sin_family
!= AF_INET
) {
402 adns__diag(ads
,-1,0,"datagram received with wrong protocol family"
403 " %u (expected %u)",udpaddr
.sin_family
,AF_INET
);
406 if (ntohs(udpaddr
.sin_port
) != DNS_PORT
) {
407 adns__diag(ads
,-1,0,"datagram received from wrong port %u (expected %u)",
408 ntohs(udpaddr
.sin_port
),DNS_PORT
);
412 serv
< ads
->nservers
&&
413 ads
->servers
[serv
].addr
.s_addr
!= udpaddr
.sin_addr
.s_addr
;
415 if (serv
>= ads
->nservers
) {
416 adns__warn(ads
,-1,0,"datagram received from unknown nameserver %s",
417 inet_ntoa(udpaddr
.sin_addr
));
420 adns__procdgram(ads
,udpbuf
,r
,serv
,0,*now
);
425 adns__consistency(ads
,0,cc_entex
);
429 int adns_processwriteable(adns_state ads
, int fd
, const struct timeval
*now
) {
432 adns__consistency(ads
,0,cc_entex
);
434 switch (ads
->tcpstate
) {
435 case server_disconnected
:
438 case server_connecting
:
439 if (fd
!= ads
->tcpsocket
) break;
440 assert(ads
->tcprecv
.used
==0);
441 assert(ads
->tcprecv_skip
==0);
443 if (!adns__vbuf_ensure(&ads
->tcprecv
,1)) { r
= ENOMEM
; goto xit
; }
444 r
= read(ads
->tcpsocket
,&ads
->tcprecv
.buf
,1);
445 if (r
==0 || (r
<0 && (errno
==EAGAIN
|| errno
==EWOULDBLOCK
))) {
446 tcp_connected(ads
,*now
);
450 adns__tcp_broken(ads
,"connect/read","sent data before first request");
453 if (errno
==EINTR
) continue;
454 if (errno_resources(errno
)) { r
= errno
; goto xit
; }
455 adns__tcp_broken(ads
,"connect/read",strerror(errno
));
459 if (fd
!= ads
->tcpsocket
) break;
460 while (ads
->tcpsend
.used
) {
461 adns__sigpipe_protect(ads
);
462 r
= write(ads
->tcpsocket
,ads
->tcpsend
.buf
,ads
->tcpsend
.used
);
463 adns__sigpipe_unprotect(ads
);
465 if (errno
==EINTR
) continue;
466 if (errno
==EAGAIN
|| errno
==EWOULDBLOCK
) { r
= 0; goto xit
; }
467 if (errno_resources(errno
)) { r
= errno
; goto xit
; }
468 adns__tcp_broken(ads
,"write",strerror(errno
));
471 ads
->tcpsend
.used
-= r
;
472 memmove(ads
->tcpsend
.buf
,ads
->tcpsend
.buf
+r
,ads
->tcpsend
.used
);
482 adns__consistency(ads
,0,cc_entex
);
486 int adns_processexceptional(adns_state ads
, int fd
, const struct timeval
*now
) {
487 adns__consistency(ads
,0,cc_entex
);
488 switch (ads
->tcpstate
) {
489 case server_disconnected
:
492 case server_connecting
:
494 if (fd
!= ads
->tcpsocket
) break;
495 adns__tcp_broken(ads
,"poll/select","exceptional condition detected");
500 adns__consistency(ads
,0,cc_entex
);
504 static void fd_event(adns_state ads
, int fd
,
505 int revent
, int pollflag
,
506 int maxfd
, const fd_set
*fds
,
507 int (*func
)(adns_state
, int fd
, const struct timeval
*now
),
508 struct timeval now
, int *r_r
) {
511 if (!(revent
& pollflag
)) return;
512 if (fds
&& !(fd
<maxfd
&& FD_ISSET(fd
,fds
))) return;
513 r
= func(ads
,fd
,&now
);
518 adns__diag(ads
,-1,0,"process fd failed after select: %s",strerror(errno
));
519 adns_globalsystemfailure(ads
);
524 void adns__fdevents(adns_state ads
,
525 const struct pollfd
*pollfds
, int npollfds
,
526 int maxfd
, const fd_set
*readfds
,
527 const fd_set
*writefds
, const fd_set
*exceptfds
,
528 struct timeval now
, int *r_r
) {
531 for (i
=0; i
<npollfds
; i
++) {
533 if (fd
>= maxfd
) maxfd
= fd
+1;
534 revents
= pollfds
[i
].revents
;
535 fd_event(ads
,fd
, revents
,POLLIN
, maxfd
,readfds
, adns_processreadable
,now
,r_r
);
536 fd_event(ads
,fd
, revents
,POLLOUT
, maxfd
,writefds
, adns_processwriteable
,now
,r_r
);
537 fd_event(ads
,fd
, revents
,POLLPRI
, maxfd
,exceptfds
, adns_processexceptional
,now
,r_r
);
541 /* Wrappers for select(2). */
543 void adns_beforeselect(adns_state ads
, int *maxfd_io
, fd_set
*readfds_io
,
544 fd_set
*writefds_io
, fd_set
*exceptfds_io
,
545 struct timeval
**tv_mod
, struct timeval
*tv_tobuf
,
546 const struct timeval
*now
) {
547 struct timeval tv_nowbuf
;
548 struct pollfd pollfds
[MAX_POLLFDS
];
549 int i
, fd
, maxfd
, npollfds
;
551 adns__consistency(ads
,0,cc_entex
);
553 if (tv_mod
&& (!*tv_mod
|| (*tv_mod
)->tv_sec
|| (*tv_mod
)->tv_usec
)) {
554 /* The caller is planning to sleep. */
555 adns__must_gettimeofday(ads
,&now
,&tv_nowbuf
);
556 if (!now
) { inter_immed(tv_mod
,tv_tobuf
); goto xit
; }
557 adns__timeouts(ads
, 0, tv_mod
,tv_tobuf
, *now
);
560 npollfds
= adns__pollfds(ads
,pollfds
);
562 for (i
=0; i
<npollfds
; i
++) {
564 if (fd
>= maxfd
) maxfd
= fd
+1;
565 if (pollfds
[i
].events
& POLLIN
) FD_SET(fd
,readfds_io
);
566 if (pollfds
[i
].events
& POLLOUT
) FD_SET(fd
,writefds_io
);
567 if (pollfds
[i
].events
& POLLPRI
) FD_SET(fd
,exceptfds_io
);
572 adns__consistency(ads
,0,cc_entex
);
575 void adns_afterselect(adns_state ads
, int maxfd
, const fd_set
*readfds
,
576 const fd_set
*writefds
, const fd_set
*exceptfds
,
577 const struct timeval
*now
) {
578 struct timeval tv_buf
;
579 struct pollfd pollfds
[MAX_POLLFDS
];
582 adns__consistency(ads
,0,cc_entex
);
583 adns__must_gettimeofday(ads
,&now
,&tv_buf
);
585 adns_processtimeouts(ads
,now
);
587 npollfds
= adns__pollfds(ads
,pollfds
);
588 for (i
=0; i
<npollfds
; i
++) pollfds
[i
].revents
= POLLIN
|POLLOUT
|POLLPRI
;
591 maxfd
,readfds
,writefds
,exceptfds
,
594 adns__consistency(ads
,0,cc_entex
);
597 /* General helpful functions. */
599 void adns_globalsystemfailure(adns_state ads
) {
600 adns__consistency(ads
,0,cc_entex
);
602 while (ads
->udpw
.head
) adns__query_fail(ads
->udpw
.head
, adns_s_systemfail
);
603 while (ads
->tcpw
.head
) adns__query_fail(ads
->tcpw
.head
, adns_s_systemfail
);
605 switch (ads
->tcpstate
) {
606 case server_connecting
:
608 adns__tcp_broken(ads
,0,0);
610 case server_disconnected
:
616 adns__consistency(ads
,0,cc_entex
);
619 int adns_processany(adns_state ads
) {
622 struct pollfd pollfds
[MAX_POLLFDS
];
625 adns__consistency(ads
,0,cc_entex
);
627 r
= gettimeofday(&now
,0);
628 if (!r
) adns_processtimeouts(ads
,&now
);
630 /* We just use adns__fdevents to loop over the fd's trying them.
631 * This seems more sensible than calling select, since we're most
632 * likely just to want to do a read on one or two fds anyway.
634 npollfds
= adns__pollfds(ads
,pollfds
);
635 for (i
=0; i
<npollfds
; i
++) pollfds
[i
].revents
= pollfds
[i
].events
& ~POLLPRI
;
641 adns__consistency(ads
,0,cc_entex
);
645 void adns__autosys(adns_state ads
, struct timeval now
) {
646 if (ads
->iflags
& adns_if_noautosys
) return;
647 adns_processany(ads
);
650 int adns__internal_check(adns_state ads
,
651 adns_query
*query_io
,
652 adns_answer
**answer
,
658 if (ads
->output
.head
) {
659 qu
= ads
->output
.head
;
660 } else if (ads
->udpw
.head
|| ads
->tcpw
.head
) {
666 if (qu
->id
>=0) return EAGAIN
;
668 LIST_UNLINK(ads
->output
,qu
);
670 if (context_r
) *context_r
= qu
->ctx
.ext
;
676 int adns_wait(adns_state ads
,
677 adns_query
*query_io
,
678 adns_answer
**answer_r
,
681 fd_set readfds
, writefds
, exceptfds
;
682 struct timeval tvbuf
, *tvp
;
684 adns__consistency(ads
,*query_io
,cc_entex
);
686 r
= adns__internal_check(ads
,query_io
,answer_r
,context_r
);
687 if (r
!= EAGAIN
) break;
689 FD_ZERO(&readfds
); FD_ZERO(&writefds
); FD_ZERO(&exceptfds
);
690 adns_beforeselect(ads
,&maxfd
,&readfds
,&writefds
,&exceptfds
,&tvp
,&tvbuf
,0);
692 rsel
= select(maxfd
,&readfds
,&writefds
,&exceptfds
,tvp
);
694 if (errno
== EINTR
) {
695 if (ads
->iflags
& adns_if_eintr
) { r
= EINTR
; break; }
697 adns__diag(ads
,-1,0,"select failed in wait: %s",strerror(errno
));
698 adns_globalsystemfailure(ads
);
702 adns_afterselect(ads
,maxfd
,&readfds
,&writefds
,&exceptfds
,0);
705 adns__consistency(ads
,0,cc_entex
);
709 int adns_check(adns_state ads
,
710 adns_query
*query_io
,
711 adns_answer
**answer_r
,
716 adns__consistency(ads
,*query_io
,cc_entex
);
717 r
= gettimeofday(&now
,0);
718 if (!r
) adns__autosys(ads
,now
);
720 r
= adns__internal_check(ads
,query_io
,answer_r
,context_r
);
721 adns__consistency(ads
,0,cc_entex
);